Specifications

CompuLab Ltd. IPC2 Hardware Specification Page 61 of 83
5.4 RS232 Serial Interface
IPC2 design provides three RS232 serial communication ports. COM1/2 support 2-wire interface
(Tx/Rx) and COM3 support full RS232 signal set, when COM1 implemented via Embedded
Controller UART and COM2/3 by UARTs located in Super-I/O Controller. Due to small dimension
physical port is implemented with ultra mini serial connector with the pinout in the table below.
Figure 16 IPC2 Serial Connectivity
Lynx Point LP
PCH
Serial
COM3
Serial
COM1
Embedded
Controller (EC)
Renesas H8S/2113
16-bit MCU
SMSC SuperIO
SIO1007
RS232
transceiver
RS232
transceiver
RS232_COM3_TX
RS232_COM3_RTS
RS232_COM3_RX
RS232_COM3_CTS
RS232_COM3_DTR
RS232_COM3_DSR
RS232_COM3_RI
Serial
COM2
RS232_COM2_TX
RS232_COM2_RX
RS232_COM1_TX
RS232_COM1_RX
UART_COM3_TX
UART_COM3_RTS
UART_COM3_RX
UART_COM3_CTS
UART_COM3_DTR
UART_COM3_DSR
UART_COM3_RI
UART_COM2_TX
UART_COM2_RX
UART_COM1_TX
UART_COM1_RX
LPC
RS232
transceiver
Table 34 Common COM port mapping
COM port
UART type
UART Controller
IO address
COM1
Tx/Rx
Embedded Controller
0x03F8 0x03FF
COM2
Tx/Rx
SuperIO Controller
0x02F8 0x02FF
COM3
Full
SuperIO Controller
0x03E8 0x03EF